the main barricade element of the Belgian KW-line, a tank barricade that was built between September 1939 and May 1940

A total volume of 77.000 pieces was ordered by the Belgian Ministry of Defence and produced by 28 Belgian companies

A large number were installed on the KW-line between the village Koningshooikt and city Wavre to act as the main line of defence against a possible German armoured invasion through the heartland of Belgium